A Review on Recent Developments of RCCI Engines Operated with Alternative Fuels

Environmental concerns over automotive exhaust emissions and consumer demand for higher fuel efficiency have led to the development of low-temperature combustion concepts. The reactivity-controlled compression ignition (RCCI) engine is one among them has potential reduce NOx smoke simultaneously. In this concept, a low-reactivity injected into intake port another high-reactivity cylinder directly. This results in reactivity stratification provides more control rate heat release. However, operating parameters such as fuels, premixing ratio, injection strategies, gas recirculation piston bowl geometry, ratio influence formation. article reviews recent developments on effect above performance emission characteristics RCCI engines operated with alternative fuels. strategies used extend mode loads are also reviewed. Applications computational fluid dynamics (CFDs) design chamber discussed. need further improvements CFD models explained. After presenting thorough review literature, directions future research proposed.